Calculator One! app for iPhone and iPad

You can switch between the modes by rotating your iPad.
Satisfy your calculation needs for free!

Features Included
- Free
- No ads
- No tracking
- No subscriptions
- No in-app purchases
- No nag screens
- No clicky audio
- No haptic feedback
- No camera access
- No microphone access
- No network access
- No contacts access
- No preferences
- No notifications
- No automotive extended warranties
- Automatic light and dark modes
- 3 lines of calculation history
- Continuous factorial function (not just integers)
- Delete button
- Custom calculation engine allows for really big numbers
- Automatically switches to E notation for numbers with a lot of 0s
- Pretty